Periodontitis

• Aichi Gakuin University, School of Dentistry — Nagoya, Aichi-ken, Japan
• Toyota Motor Corporation — Toyota, Aichi-ken, Japan
• Nihon University School of Dentistry at Matsudo — Matsudo, Chiba, Japan
• Hiroshima University Graduate School of Biomedical Sciences — Hiroshima, Japan

• Kaken Investigational Site — Nagoya, Aichi-ken, Japan
• Kaken Investigational Site — Matsudo, Chiba, Japan
• Kaken Investigational Site — Fukuoka, Japan
• Kaken Investigational Site — Kitakyushu, Fukuoka, Japan

• University Freiburg Medical Center , Dept of Operative Dentistry and Periodontology — Freiburg im Breisgau, Germany

• Martin Luther-University Halle-Wittenberg — Halle, Germany

Not specified

Not specified

• The University of Texas Health Science Center at San Antonio, Dental School — San Antonio, Texas, United States

• Forsyth Institute — Boston, Massachusetts, United States

• JJCPPW Investigational Site — Aurora, Colorado, United States
• JJCPPW Investigational Site — Ann Arbor, Michigan, United States
• JJCPPW Investigational Site — Hazlet, New Jersey, United States
• JJCPPW Investigational Site — Seattle, Washington, United States

• University of L'Aquila, Division of Periodontology — L’Aquila, AQ, Italy